CSS Flexbox is a powerful layout module in web development that enhances responsive design by allowing elements to automatically adjust to different screen sizes and orientations. Unlike traditional layout techniques, which often require manual adjustments and media queries, Flexbox enables developers to create flexible, adaptable structures with less code. Flexbox’s primary advantage is its ability to arrange elements in rows or columns and manage their alignment, direction, and spacing. This makes it easier to build layouts that work across various devices, from mobile phones to large desktop screens.

One of the key features of Flexbox is its "flex-grow" and "flex-shrink" properties, which allow elements to expand or contract based on the available space. This enables seamless resizing without breaking the layout structure. The "justify-content" and "align-items" properties allow quick alignment adjustments, making it easy to center elements or space them evenly, regardless of the screen size.

Flexbox simplifies the process of creating responsive designs by allowing elements to fluidly adapt, making it an essential tool in modern web development. Mastering Flexbox and other responsive techniques is crucial for any developer, and a comprehensive website development course will cover these fundamentals to prepare you for real-world projects.